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A. w. H ALL.

lmprovement'in Anti-Friction Bearings for Journals, &c.

) N0. H5,02 Patentedjune 6,1871.-

ALEX. w. HALL, or Nnw ronx, N. Y.

iMPROVEiENT IN ANTI-FRiCTION BEARINGS FOR JOURNALS.

Specication forming part of Letters Patent No. 115,602, dated June 6, 1871.

To al?, whomf it may concern:

' Be it known that I, ALEX.W. HALL, of the city, county, and State of New York, have inventedcertain new and useful Improvements in- Anti-Friction Bearin gs for Journals and Axles andi-I do hereby declare that the following is \a full, clear, and exact description of the saine,

reference being had to the accompanying drawing forming a part of this specification.

Figures'l and 2 represent, respectively, an end and a sectional view of my device, like letters referring to like parts.

To enable others to understand the construe tion and operation of my invention, I will proceed to describe it with reference to the drawing. l

A A is a journal or axle. Bis a journal-box or hub. C C are bearing-rollers in contact with journal A, and hub B at its inner surface g g. dd are separating-rollers, employed to prevent contact between rollers C G. i i are journals, projecting' from ends of rollers d d. c e are plates, placed near the ends' of the rollers C C d d, and fast to the hub or box, with circular grooves f f in their inner faces, vinto which the journals i fi are inserted. The width of these grooves somewhat exceeds the diameter of the journals, so that the journals i i, when pressed against the inner bearings a n, do not touch the outer bearings rxr.

The distinctive feature of my invention is to support the rollers d d between the rollers G C without friction. 4

The separating-rollers d d are made slightly too large to pass outward between the rollers C C, (placed equidistant from each other about the journal A,) and are held in contact with rollers C C, and free from contact with journal A by the circular bearings a a, supporting the journals i z'. The groove-bearings a a and the journals z' i are constructed in a common ratio to the circumference g g and the circumference ci d, respectively. In this arrangement and proportion or" parts, motion being applied to the journal A in the direction of the arroww, the rollers O C d d will move axially in the direction of the arrows and bodilyr in the in the direction of the arrows z z, and the journals i will roll around the circular bearings fnI a without friction. The only friction possiv ble will arise from the occasional contact of the ends of the rollers C C d d with the end plates e c, between which they are allowed slight longitudinal motion.

The operation of my invention is the same,

whether the journal A revolves and the box B remains stationary, or the box revolves and the journal remains ixed.

Having thus explained the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the journal or axle A and the box or hub B, theY rollers G Gand d d, journals Ai v1, and circular bearings a a, all

arranged to operate substantially as and for the purposes set forth.

2. Placing the center of the rollers old within the center line k k, substantially as shown, andfor the purposes specified. I

3. The outer walls r r of the grooves ff, in close proximity to the journals 'i c', substantially as and for the purposes shown.

ALEX. W. HALL.

Witnesses z Dxvrn P. MURPHY, R.. F. Srnvnus. 

